Improved glass-pbessing machine



M. SWEENEY. GLASS PEESSING MACHINE.

No. 79,786. Patented July 7, 186-br-- Ewen/ az- W e M w Quinn gram gaunt@ffirr.

MICHAEL SWEENEY, OF WHEELING,-WEST VIRGINIA, ASSIGNOR TO SWEENEY, BELL,AND GOMPAN Y, OF SAME PLACE.

Letters Patent No. 79.7 86. dated July 7 1868.

IMPROVED GLASS-PRBSSING MACHINE.

TO ALL WHOM IT .MAY CONCERN:-

Be it known that-I, MICHAEL SWEENEY, of Whe'eling,'in the county ofOhio, and State of West Virginia, have invented a new and usefulImprovement in Machines for Moulding and Pressing Glass; and I do herebydeclare that the following is a full, clear, and exact description ofthe same,-referencebeing had to the annexed drawings, malring part'ofthis specification. in which Figure 1 is a perspective view, and

Figure Z'isan elevation of the air-blast mechanism.

The is letters indicate identical parts in both the figures.

My invention consists in the application of'cnrrents of air directed bypipes leading from a fan, or other equivalent machine, to the plungerand surface of moulds used in glass-pressing machines, for the purposeof cooling the same.

In ti: manufacture of pressed glassware, great inconvenience isexperienced from the. heating of themculd and plunger, causing a scum orshell to form on the mou-ld, which necessitates its cleansing afterbeing used a few hours. 1 It is also necessary to resort to thehammering process to ,deliver the glass, which soon injures the mould.To obviate these difiiculties, I apply strong blasts of air to theplunger, and also to, the surface of'the moulds, thereby keeping them ata uniform temperature, preventing theformation of a shell, and effectingthe easy delivery of the glass.

I have illustrated in the drawingsone forin of glass-pressing machine,and one arrangement of a pressureblast. The same principle may beapplied to other form's of presses, or by means of any other form ofpressurehlast.

My invention does not consist in the mechanism, which is not n'ew, hutin the combination of a glass- )ressing machine and a machine forproducing blasts of air, said blasts being applied for the purposeherein iet forth. 7

In the annexed drawings, A is the bed, upon which the press and mouldare placed; B is the frame of the press, and O theplunger, 'whichisforced into the mould by means of the rods, D D, attached tothecross-head and actuated by the eccentrics E. These eccentrics are turnedby alever in the ordinary manner. F is a head, through which the plungerpasses, which has an elastic hearing against springs. This elastic headforms the top of the article in the mould. G isa mould, such asisused-in pressing glass. It slides on the bed A. I is a fan, for creatinga blast of air. ,It may be driven by a belt passing around the pulley Kand the whirl I on the fan shaft. The wind-from the fan is driven intothe receiver L, from which it is conducted by means of two tubes, M andN. The tube M is so placed as to dischargeits blast directly on or intothe mould G when drawn from under the press. The tube N leads under thetable, opening upward immediately under the-plunger, so as to' directthe blast therefrom against the latter. I

What I claim as my invention, and desire tcse cure by Letters Patent,is-

1'. The combination of a machine for pressing glass and apressure-blast, the tubes leading from which are so arranged thatcold-air currents, generated by the blast, shall be directed against thesurfaces of the pressingmechanism, substantially as and for the purposeset forth.

2. So arranging the pipes M and N, leading-from the pressure-blast I, asto direct the currents of air to the mould G, and against the plunger G,substantially in the manner set forth.

In witness whereof, I have sienedmy name to this specification in thepresence of two subscribing witnesses.

MICHAEL SWEENEY.

Witnesses:

S. P. Hrnnnnrn, Jss. P. WILKINSON.

